Arbin says the 8-year-old was apparently knocked down by a wave and pulled out by a rip current at the Inlet.

"She was located off shore. The currents around the Inlet jetty because of the back Bay emptying out are pretty strong," says Arbin.

The girl was taken to the hospital where she died. Arbin says lifeguards had been off-duty for about 90 minutes when the girl was swept away. He says had the same event happened while lifeguards were working, it would have been a simple rescue.

The man who disappeared on Sunday morning was last seen around 1 a.m. when he left an establishment on the Boardwalk and then went into the water. Coast Guard crews and other state and local agencies searched for him all day Sunday and then called off the search.

The Coast Guard identifies the man as 35-year-old James Lenhart.

The large sand cliffs which reached about four or five feet returned over the holiday weekend.

Captain Arbin says the cliff creates a problem for people having to climb over it to get into the water, but he says it is not necessarily a safety hazard for lifeguards.

Here is more information from officials in Ocean City:

OCEAN CITY, MD – (September 6, 2015): An evening at the beach became a tragedy for a local family yesterday. At approximately 7 p.m., Ocean City Fire Department and Beach Patrol rescue swimmers responded to the Inlet after Ocean City Communications received a call for a young swimmer in distress.

According to witnesses, the victim, an 8-year-old female, was swimming with friends in shallow water when she was struck by a wave. The young girl was overcome by the wave and pulled in to the inlet waters.

Minutes later, an on-duty Maryland Natural Resources Police patrol vessel responded to the area and located the child nearly a quarter of a mile off shore. The victim, whose name has not been released, was taken to the United States Coast Guard Station, where Ocean City EMS continued life-saving efforts.

The child was immediately taken to Atlantic General Hospital, where she was later pronounced deceased. An autopsy to confirm the cause and manner of death is currently being conducted by the Office of the Chief Medical Examiner in Baltimore, however; the results were not available at the time of this release.